/* vi:set ts=8 sts=4 sw=4 noet:
 *
 * VIM - Vi IMproved	by Bram Moolenaar
 *
 * Do ":help uganda"  in Vim to read copying and usage conditions.
 * Do ":help credits" in Vim to see a list of people who contributed.
 */

/*
 * NextStep has a problem with configure, undefine a few things:
 */
#ifdef NeXT
#ifdef HAVE_UTIME
#undef HAVE_UTIME
#endif
#ifdef HAVE_SYS_UTSNAME_H
#undef HAVE_SYS_UTSNAME_H
#endif
#endif

#include <ctype.h>
#include <stdio.h>

#ifdef VAXC
#include <stat.h>
#include <types.h>
#else
#include <sys/stat.h>
#include <sys/types.h>
#endif

#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif

#ifdef __CYGWIN__
#define WIN32UNIX /* Compiling for Win32 using Unix files. */
#define BINARY_FILE_IO

#define CASE_INSENSITIVE_FILENAME
#define USE_FNAME_CASE /* Fix filename case differences. */
#endif

#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif

#ifdef HAVE_LIBC_H
#include <libc.h> /* for NeXT */
#endif

#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h> /* defines BSD, if it's a BSD system */
#endif

/*
 * Using getcwd() is preferred, because it checks for a buffer overflow.
 * Don't use getcwd() on systems do use system("sh -c pwd").  There is an
 * autoconf check for this.
 * Use getcwd() anyway if getwd() isn't present.
 */
#if defined(HAVE_GETCWD) && !(defined(BAD_GETCWD) && defined(HAVE_GETWD))
#define USE_GETCWD
#endif

/* always use unlink() to remove files */
#ifndef PROTO
#ifdef VMS
#define mch_remove(x) delete ((char *)(x))
#define vim_mkdir(x, y) mkdir((char *)(x), y)
#else
#define vim_mkdir(x, y) mkdir((char *)(x), y)
#define mch_rmdir(x) rmdir((char *)(x))
#define mch_remove(x) unlink((char *)(x))
#endif
#endif

/* The number of arguments to a signal handler is configured here. */
/* It used to be a long list of almost all systems. Any system that doesn't
 * have an argument??? */
#define SIGHASARG

/* List 3 arg systems here. I guess __sgi, please test and correct me. jw. */
#if defined(__sgi) && defined(HAVE_SIGCONTEXT)
#define SIGHAS3ARGS
#endif

#ifdef SIGHASARG
#ifdef SIGHAS3ARGS
#define SIGPROTOARG (int, int, struct sigcontext *)
#define SIGDEFARG(s)            \
  (s, sig2, scont) int s, sig2; \
  struct sigcontext *scont;
#define SIGDUMMYARG 0, 0, (struct sigcontext *)0
#else
#define SIGPROTOARG (int)
#define SIGDEFARG(s) (s) int s UNUSED;
#define SIGDUMMYARG 0
#endif
#else
#define SIGPROTOARG (void)
#define SIGDEFARG(s) ()
#define SIGDUMMYARG
#endif

#ifdef HAVE_DIRENT_H
#include <dirent.h>
#ifndef NAMLEN
#define NAMLEN(dirent) strlen((dirent)->d_name)
#endif
#else
#define dirent direct
#define NAMLEN(dirent) (dirent)->d_namlen
#if HAVE_SYS_NDIR_H
#include <sys/ndir.h>
#endif
#if HAVE_SYS_DIR_H
#include <sys/dir.h>
#endif
#if HAVE_NDIR_H
#include <ndir.h>
#endif
#endif

#if !defined(HAVE_SYS_TIME_H) || defined(TIME_WITH_SYS_TIME)
#include <time.h> /* on some systems time.h should not be
			       included together with sys/time.h */
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif

#include <signal.h>

#if defined(DIRSIZ) && !defined(MAXNAMLEN)
#define MAXNAMLEN DIRSIZ
#endif

#if defined(UFS_MAXNAMLEN) && !defined(MAXNAMLEN)
#define MAXNAMLEN UFS_MAXNAMLEN /* for dynix/ptx */
#endif

#if defined(NAME_MAX) && !defined(MAXNAMLEN)
#define MAXNAMLEN NAME_MAX /* for Linux before .99p3 */
#endif

/*
 * Note: if MAXNAMLEN has the wrong value, you will get error messages
 *	 for not being able to open the swap file.
 */
#if !defined(MAXNAMLEN)
#define MAXNAMLEN 512 /* for all other Unix */
#endif

#define BASENAMELEN (MAXNAMLEN - 5)

#ifdef HAVE_PWD_H
#include <pwd.h>
#endif

#if (defined(HAVE_SYS_RESOURCE_H) && defined(HAVE_GETRLIMIT)) || (defined(HAVE_SYS_SYSINFO_H) && defined(HAVE_SYSINFO)) || defined(HAVE_SYSCTL) || defined(HAVE_SYSCONF)
#define HAVE_TOTAL_MEM
#endif

#ifndef PROTO

#ifdef VMS
#include <dcdef.h>
#include <descrip.h>
#include <dvidef.h>
#include <file.h>
#include <iodef.h>
#include <jpidef.h>
#include <lib$routines.h>
#include <libclidef.h>
#include <libdef.h>
#include <libdtdef.h>
#include <lnmdef.h>
#include <prvdef.h>
#include <psldef.h>
#include <rms.h>
#include <signal.h>
#include <socket.h>
#include <ssdef.h>
#include <starlet.h>
#include <string.h>
#include <stsdef.h>
#include <trmdef.h>
#include <tt2def.h>
#include <ttdef.h>
#include <unixio.h>
#include <unixlib.h>
#endif

#endif /* PROTO */

#ifdef VMS
typedef struct dsc$descriptor DESC;
#endif

/*
 * Unix system-dependent file names
 */
#ifndef SYS_VIMRC_FILE
#define SYS_VIMRC_FILE "$VIM/vimrc"
#endif
#ifndef SYS_GVIMRC_FILE
#define SYS_GVIMRC_FILE "$VIM/gvimrc"
#endif
#ifndef DFLT_HELPFILE
#define DFLT_HELPFILE "$VIMRUNTIME/doc/help.txt"
#endif
#ifndef FILETYPE_FILE
#define FILETYPE_FILE "filetype.vim"
#endif
#ifndef FTPLUGIN_FILE
#define FTPLUGIN_FILE "ftplugin.vim"
#endif
#ifndef INDENT_FILE
#define INDENT_FILE "indent.vim"
#endif
#ifndef FTOFF_FILE
#define FTOFF_FILE "ftoff.vim"
#endif
#ifndef FTPLUGOF_FILE
#define FTPLUGOF_FILE "ftplugof.vim"
#endif
#ifndef INDOFF_FILE
#define INDOFF_FILE "indoff.vim"
#endif
#ifndef SYS_MENU_FILE
#define SYS_MENU_FILE "$VIMRUNTIME/menu.vim"
#endif

#ifndef USR_EXRC_FILE
#ifdef VMS
#define USR_EXRC_FILE "sys$login:.exrc"
#else
#define USR_EXRC_FILE "$HOME/.exrc"
#endif
#endif

#if !defined(USR_EXRC_FILE2) && defined(VMS)
#define USR_EXRC_FILE2 "sys$login:_exrc"
#endif

#ifndef USR_VIMRC_FILE
#ifdef VMS
#define USR_VIMRC_FILE "sys$login:.vimrc"
#else
#define USR_VIMRC_FILE "$HOME/.vimrc"
#endif
#endif

#if !defined(USR_VIMRC_FILE2)
#ifdef VMS
#define USR_VIMRC_FILE2 "sys$login:vimfiles/vimrc"
#else
#define USR_VIMRC_FILE2 "~/.vim/vimrc"
#endif
#endif

#if !defined(USR_VIMRC_FILE3) && defined(VMS)
#define USR_VIMRC_FILE3 "sys$login:_vimrc"
#endif

#ifndef USR_GVIMRC_FILE
#ifdef VMS
#define USR_GVIMRC_FILE "sys$login:.gvimrc"
#else
#define USR_GVIMRC_FILE "$HOME/.gvimrc"
#endif
#endif

#ifndef USR_GVIMRC_FILE2
#ifdef VMS
#define USR_GVIMRC_FILE2 "sys$login:vimfiles/gvimrc"
#else
#define USR_GVIMRC_FILE2 "~/.vim/gvimrc"
#endif
#endif

#ifdef VMS
#ifndef USR_GVIMRC_FILE3
#define USR_GVIMRC_FILE3 "sys$login:_gvimrc"
#endif
#endif

#ifndef VIM_DEFAULTS_FILE
#define VIM_DEFAULTS_FILE "$VIMRUNTIME/defaults.vim"
#endif

#ifndef EVIM_FILE
#define EVIM_FILE "$VIMRUNTIME/evim.vim"
#endif

#ifdef FEAT_VIMINFO
#ifndef VIMINFO_FILE
#ifdef VMS
#define VIMINFO_FILE "sys$login:.viminfo"
#else
#define VIMINFO_FILE "$HOME/.viminfo"
#endif
#endif
#if !defined(VIMINFO_FILE2) && defined(VMS)
#define VIMINFO_FILE2 "sys$login:_viminfo"
#endif
#endif

#ifndef EXRC_FILE
#define EXRC_FILE ".exrc"
#endif

#ifndef VIMRC_FILE
#define VIMRC_FILE ".vimrc"
#endif

#ifndef SYNTAX_FNAME
#define SYNTAX_FNAME "$VIMRUNTIME/syntax/%s.vim"
#endif

#ifndef DFLT_BDIR
#ifdef VMS
#define DFLT_BDIR "./,sys$login:,tmp:"
#else
#define DFLT_BDIR ".,~/tmp,~/" /* default for 'backupdir' */
#endif
#endif

#ifndef DFLT_DIR
#ifdef VMS
#define DFLT_DIR "./,sys$login:,tmp:"
#else
#define DFLT_DIR ".,~/tmp,/var/tmp,/tmp" /* default for 'directory' */
#endif
#endif

#ifndef DFLT_VDIR
#ifdef VMS
#define DFLT_VDIR "sys$login:vimfiles/view"
#else
#define DFLT_VDIR "$HOME/.vim/view" /* default for 'viewdir' */
#endif
#endif

#define DFLT_ERRORFILE "errors.err"

#ifdef VMS
#define DFLT_RUNTIMEPATH "sys$login:vimfiles,$VIM/vimfiles,$VIMRUNTIME,$VIM/vimfiles/after,sys$login:vimfiles/after"
#define CLEAN_RUNTIMEPATH "$VIM/vimfiles,$VIMRUNTIME,$VIM/vimfiles/after"
#else
#ifdef RUNTIME_GLOBAL
#ifdef RUNTIME_GLOBAL_AFTER
#define DFLT_RUNTIMEPATH "~/.vim," RUNTIME_GLOBAL ",$VIMRUNTIME," RUNTIME_GLOBAL_AFTER ",~/.vim/after"
#define CLEAN_RUNTIMEPATH RUNTIME_GLOBAL ",$VIMRUNTIME," RUNTIME_GLOBAL_AFTER
#else
#define DFLT_RUNTIMEPATH "~/.vim," RUNTIME_GLOBAL ",$VIMRUNTIME," RUNTIME_GLOBAL "/after,~/.vim/after"
#define CLEAN_RUNTIMEPATH RUNTIME_GLOBAL ",$VIMRUNTIME," RUNTIME_GLOBAL "/after"
#endif
#else
#define DFLT_RUNTIMEPATH "~/.vim,$VIM/vimfiles,$VIMRUNTIME,$VIM/vimfiles/after,~/.vim/after"
#define CLEAN_RUNTIMEPATH "$VIM/vimfiles,$VIMRUNTIME,$VIM/vimfiles/after"
#endif
#endif

#ifdef VMS
#ifndef VAX
#define VMS_TEMPNAM /* to fix default .LIS extension */
#endif
#define TEMPNAME "TMP:v?XXXXXX.txt"
#define TEMPNAMELEN 28
#else
/* Try several directories to put the temp files. */
#define TEMPDIRNAMES "$TMPDIR", "/tmp", ".", "$HOME"
#define TEMPNAMELEN 256
#endif

/* Special wildcards that need to be handled by the shell */
#define SPECIAL_WILDCHAR "`'{"

#ifndef HAVE_OPENDIR
#define NO_EXPANDPATH
#endif

/*
 * Unix has plenty of memory, use large buffers
 */
#define CMDBUFFSIZE 1024 /* size of the command processing buffer */

/* Use the system path length if it makes sense. */
#if defined(PATH_MAX) && (PATH_MAX > 1000)
#define MAXPATHL PATH_MAX
#else
#define MAXPATHL 1024
#endif

// clang-format off
#define CHECK_INODE /* used when checking if a swap file already \
                        exists for a file */
// clang-format on

#ifdef VMS /* Use less memory because of older systems  */
#ifndef DFLT_MAXMEM
#define DFLT_MAXMEM (2 * 1024)
#endif
#ifndef DFLT_MAXMEMTOT
#define DFLT_MAXMEMTOT (5 * 1024)
#endif
#else
#ifndef DFLT_MAXMEM
#define DFLT_MAXMEM (5 * 1024) /* use up to 5 Mbyte for a buffer */
#endif
#ifndef DFLT_MAXMEMTOT
#define DFLT_MAXMEMTOT (10 * 1024) /* use up to 10 Mbyte for Vim */
#endif
#endif

/* memmove() is not present on all systems, use memmove, bcopy or memcpy.
 * Some systems have (void *) arguments, some (char *). If we use (char *) it
 * works for all */
#if defined(USEMEMMOVE) || (!defined(USEBCOPY) && !defined(USEMEMCPY))
#define mch_memmove(to, from, len) memmove((char *)(to), (char *)(from), len)
#else
#ifdef USEBCOPY
#define mch_memmove(to, from, len) bcopy((char *)(from), (char *)(to), len)
#else
/* ifdef USEMEMCPY */
#define mch_memmove(to, from, len) memcpy((char *)(to), (char *)(from), len)
#endif
#endif

#ifndef PROTO
#ifdef HAVE_RENAME
#define mch_rename(src, dst) rename(src, dst)
#else
int mch_rename(const char *src, const char *dest);
#endif
#ifndef VMS
#ifdef __MVS__
/* on OS390 Unix getenv() doesn't return a pointer to persistent
   * storage -> use __getenv() */
#define mch_getenv(x) (char_u *)__getenv((char *)(x))
#else
#define mch_getenv(x) (char_u *)getenv((char *)(x))
#endif
#define mch_setenv(name, val, x) setenv(name, val, x)
#endif
#endif

/* Note: Some systems need both string.h and strings.h (Savage).  However,
 * some systems can't handle both, only use string.h in that case. */
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#if defined(HAVE_STRINGS_H) && !defined(NO_STRINGS_WITH_STRING_H)
#include <strings.h>
#endif

#if defined(HAVE_SETJMP_H)
#include <setjmp.h>
#ifdef HAVE_SIGSETJMP
#define JMP_BUF sigjmp_buf
#define SETJMP(x) sigsetjmp((x), 1)
#define LONGJMP siglongjmp
#else
#define JMP_BUF jmp_buf
#define SETJMP(x) setjmp(x)
#define LONGJMP longjmp
#endif
#endif

#ifndef HAVE_DUP
#define HAVE_DUP /* have dup() */
#endif
#define HAVE_ST_MODE /* have stat.st_mode */

/* We have three kinds of ACL support. */
#define HAVE_ACL (HAVE_POSIX_ACL || HAVE_SOLARIS_ACL || HAVE_AIX_ACL)
